564647616 has 84 divisors (see below), whose sum is σ = 1742980512. Its totient is φ = 173735424.

The previous prime is 564647599. The next prime is 564647617. The reversal of 564647616 is 616746465.

564647616 is a `hidden beast` number, since 564 + 6 + 4 + 76 + 16 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (564647617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30216 + ... + 45191.

It is an arithmetic number, because the mean of its divisors is an integer number (20749768).

Almost surely, 2^564647616 is an apocalyptic number.

It is an amenable number.

564647616 is an abundant number, since it is smaller than the sum of its proper divisors (1178332896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

564647616 is a wasteful number, since it uses less digits than its factorization.

564647616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75438 (or 75425 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 564647616 is about 23762.3150387331. The cubic root of 564647616 is about 826.5310368306.

The spelling of 564647616 in words is "five hundred sixty-four million, six hundred forty-seven thousand, six hundred sixteen".